Energy drinks are very popular with teenagers. Most energy drinks contain caffeine. In a 12-ounce can or bottle of a popular energy drink, the caffeine could range from 65 milligrams to 190 milligrams. This compares to a 12-ounce caffeinated soft drink, which may contain about 24 milligrams. It is recommended that children limit their caffeine intake to less than 100 milligrams a day. Also, be aware that energy drinks may contain lots of calories and no nutritive value. Water is still the best choice for hydration.

